altered mental status Flashcards
deep dreamlike state from which one cannot be aroused
coma
awake but responds to commands only
lthargic
appears asleep, responds to light glabellar tap/stimulus
obtunded
appears alseep, very sluggish
stuperous
appears awake, but nonresponsive
vegetatitve state
few voluntary movements, will blink in response to visual threat, resist eyelid elevation
catatonia
pt awake but can only move eyes/eyelids
CPM
causes of coma
lesions that damage ___ in thalamus or projections
pupils enlarged, loss of light reflex, loss vertical/adduction mvmnt
lesion is in ___
eye mvmnt preserved but as before, lesions is to ___
RAS
upper brainstem
upper cerebral hemisphere
cause of com
destruction of large portion of both ____
suppression via __/___
cerebral hemispheres
drugs/metabolism
when uncus impacts tentorial opening just anterior/adjacent to midbrain
___ herniation
displaced brain tissue compresses ___ as it traverse the SA space
results in enlagred ___, w coma
uncal tentorial
midbrain
ipsilateral pupil
symmetric downward movement of thalamic medial structures through tentorial opening w compressed upper midbrain
mitotic pupils/drowsiness
___ herniation
central transtentorial herniaton
Cerebral neurons depend on ___/___
coma from H/I/H/H
__/__ failure
altered ____
oxygen/glucose
hypoxia/isheia/hypoGly/hyperosmolarity
hepatic/reanl
neuron excitability
dec flexion of elbow/wrists and supination of arms
___ rigidity
suggests bilateral damage __ to midbrain
dec extension of wrists/elbows w pronation
___ rigidity
damage to __ or caudal __
decorticate
rostral
decerebrate
midbrain, diencephalon
one enlarged pupil suggest mass effect compressing __
bilaterla fixed/dilated pupils suggests sevre ___
pinpoint pupils w __/__ OD or __ hemorrhage
CN3
midbrain damage
Pons
conjugate horizontal ocular deviation indicates damage to __ on other side, or __ on same side
brisk downward, slow upward movement of eyes, loss of horizontal eye mvmnt
Bilateral __ damage
pons, frontal lobe
pontine